[Beowulf] scyld beowulf beoboot-install utility

Jonas M Palencia jonas.palencia at abbott.com
Wed Mar 9 14:31:28 PST 2005

Hi All,

We are running Scyld 28cz-7 on our cluster.

One of our nodes (Compute Node 0) in the cluster was replaced because of 
bad motherboard.  So the MAC address has changed.  The hard disk wasn't 
changed but some linux was installed into it for testing purposes.   I'm 
trying to add this node back to the cluster.  Using beosetup, the new MAC 
address was registered as node 0.

I tried to partition the disk using the beofdisk tool, then I restarted 
the node:


[root at abcmc02 fdisk]# beofdisk -w -n 0
Disk /dev/hda: 4865 cylinders, 255 heads, 63 sectors/track
Old situation:
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/hda1   *      0+      0       1-      8001   89  Unknown
/dev/hda2          1     516     516    4144770   82  Linux swap
/dev/hda3        517    4864    4348   34925310   83  Linux
/dev/hda4          0       -       0          0    0  Empty
New situation:
Units = sectors of 512 bytes, counting from 0
   Device Boot    Start       End   #sectors  Id  System
/dev/hda1   *        63     16064      16002  89  Unknown
/dev/hda2         16065   8305604    8289540  82  Linux swap
/dev/hda3       8305605  78156224   69850620  83  Linux
/dev/hda4             0         -          0   0  Empty
Successfully wrote the new partition table
Re-reading the partition table ...
If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)
to zero the first 512 bytes:  dd if=/dev/zero of=/dev/foo7 bs=512 count=1
(See fdisk(8).)
The partition table on node 0 has been modified.
You must reboot each affected node for changes to take effect.

[root at abcmc02 fdisk]# beoboot-install 0 /dev/hda
Creating boot images...
Installing beoboot on partition 1 of /dev/hda.
mke2fs 1.32 (09-Nov-2002)
/dev/hda1: 11/2000 files (0.0% non-contiguous), 268/8001 blocks
rcp: /boot/boot.b: No such file or directory
Failed to copy boot.b to node 0:/tmp/.beoboot-install.mnt


I guess the problem is the beoboot-install utility.  It didn't find the 
/boot/boot.b file.  Indeed, that file cannot be found in the master node. 
Could this be a bug?

After rebooting, it came out with an ERROR state on the BeoSetup window. 
Here's the log:

node_up: Initializing cluster node 0 at Wed Mar  9 15:44:55 EST 2005.
node_up: Setting system clock from the master.
node_up: Configuring loopback interface.
node_up: Loading device support modules for kernel version 
setup_fs: Configuring node filesystems using /etc/beowulf/fstab...
setup_fs:  Checking /dev/hda2 (type=swap)...
chkswap: /dev/hda2: Unable to find swap-space signature
setup_fs: FSCK failure. (OK for RAM disks)
setup_fs:  Mounting /dev/hda2 on swap (type=swap; options=defaults)
swapon: /dev/hda2: Invalid argument
setup_fs: Failed to mount /dev/hda2 on swap (fatal).

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